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NX25F011B Datasheet(PDF) 24 Page - List of Unclassifed Manufacturers

Part No. NX25F011B
Description  1M-BIT, 2M-BIT, AND 4M-BIT SERIAL FLASH MEMORIES WITH 4-PIN SPI INTERFACE
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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NX25F011B Datasheet(HTML) 24 Page - List of Unclassifed Manufacturers

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NexFlash Technologies, Inc.
PRELIMINARY NXSF016F-1201
12/12/01 ©
NX25F011B
NX25F021B
NX25F041B
Read Device
Info. Sector
Command
16 Clocks
Byte
Address*
16 Clocks
SI
SO
15H
0000H
B[15:0]
0000H
RB[15:0]
First Byte - Last Byte
Read/Busy
Status
Read Sector Data
*The byte address only uses bits [8:0]
Read Device Information Sector (15H)
The
Read Device Information command provides access
to a read-only sector that can be used to electronically
identify the
NexFlash Serial Flash device being inter-
faced to. Information available includes: part number,
density, voltage, temperature range, package type, and
any special options. This can be extremely useful for
systems that need to accommodate optional densities
(e.g., both 1M-bit or 2M-bit). In this case the firmware can
interrogate the Device Information Sector and
determine the density. The Device Information Sector
also includes a list of any restricted sectors that might
exist in the device. Contact
NexFlash for more detailed
information on the Device Information Sector format.
SPECIAL SECTOR COMMANDS
Erase Sector (F1H)
The
Erase Sector command (F1H) will erase a sector to an
“all 1s” state, during this time the array will be "busy." This
command can be used in conjunction with the
Write only to
Sector through SRAM command (F2H) to achieve faster
program performance in applications that can accommo-
date pre-erase. (see TEO in AC Characteristics for
erase timing).
*The sector address only uses bits [8:0], [9:0] or [10:0]
Depending on device density
Erase
Sector
Command
Sector
Address*
16
Clocks
SI
SO
F1H
S[15:0]
0000H
Transfer Time
(
tEO)


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